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Theorem rexlimdv3a 2589
Description: Inference from Theorem 19.23 of [Margaris] p. 90 (restricted quantifier version). Frequently-used variant of rexlimdv 2586. (Contributed by NM, 7-Jun-2015.)
Hypothesis
Ref Expression
rexlimdv3a.1 ((𝜑𝑥𝐴𝜓) → 𝜒)
Assertion
Ref Expression
rexlimdv3a (𝜑 → (∃𝑥𝐴 𝜓𝜒))
Distinct variable groups:   𝜑,𝑥   𝜒,𝑥
Allowed substitution hints:   𝜓(𝑥)   𝐴(𝑥)

Proof of Theorem rexlimdv3a
StepHypRef Expression
1 rexlimdv3a.1 . . 3 ((𝜑𝑥𝐴𝜓) → 𝜒)
213exp 1197 . 2 (𝜑 → (𝑥𝐴 → (𝜓𝜒)))
32rexlimdv 2586 1 (𝜑 → (∃𝑥𝐴 𝜓𝜒))
Colors of variables: wff set class
Syntax hints:  wi 4  w3a 973  wcel 2141  wrex 2449
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-5 1440  ax-gen 1442  ax-ie1 1486  ax-ie2 1487  ax-4 1503  ax-17 1519  ax-ial 1527  ax-i5r 1528
This theorem depends on definitions:  df-bi 116  df-3an 975  df-nf 1454  df-ral 2453  df-rex 2454
This theorem is referenced by:  resqrtcl  10993
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